I have made some of my own and have been really happy with them. The first couple I made out of old flanalette sheets and towels so it didn't matter if I stuffed them up. The hardest thing for me was getting the pattern just the right shape for my boys. Now I have that under control it is fine, the sewing involved is not difficult. I also like it as I couls take the things I liked about other nappies and put them together the way I wanted them.
To get all the good fabrics you need to get online, but I would try with some remnants before you spend $ on bamboo etc. Good luck.